vgaHW.h revision c0dfd29d0951fba6d2505a1a5fd79b2c1c32eccd
/*
* Copyright (c) 1997,1998 The XFree86 Project, Inc.
*
* Loosely based on code bearing the following copyright:
*
* Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
*
* Author: Dirk Hohndel
*/
#ifndef _VGAHW_H
#define _VGAHW_H
#include "misc.h"
#include "input.h"
#include "scrnintstr.h"
#include "colormapst.h"
#include "xf86str.h"
#include "xf86Pci.h"
#include "xf86DDC.h"
#include "globals.h"
#define DPMS_SERVER
extern int vgaHWGetIndex(void);
/*
* access macro
*/
/* Standard VGA registers */
#define VGA_ATTR_INDEX 0x3C0
#define VGA_ATTR_DATA_W 0x3C0
#define VGA_ATTR_DATA_R 0x3C1
#define VGA_ENABLE 0x3C3
#define VGA_SEQ_INDEX 0x3C4
#define VGA_SEQ_DATA 0x3C5
#define VGA_DAC_MASK 0x3C6
#define VGA_DAC_READ_ADDR 0x3C7
#define VGA_DAC_WRITE_ADDR 0x3C8
#define VGA_DAC_DATA 0x3C9
#define VGA_GRAPH_INDEX 0x3CE
#define VGA_GRAPH_DATA 0x3CF
#define VGA_IOBASE_MONO 0x3B0
#define VGA_IOBASE_COLOR 0x3D0
#define VGA_CRTC_INDEX_OFFSET 0x04
#define VGA_CRTC_DATA_OFFSET 0x05
/* default number of VGA registers stored internally */
#define VGA_NUM_CRTC 25
#define VGA_NUM_SEQ 5
#define VGA_NUM_GFX 9
#define VGA_NUM_ATTR 21
/* Flags for vgaHWSave() and vgaHWRestore() */
#define VGA_SR_MODE 0x01
#define VGA_SR_FONTS 0x02
#define VGA_SR_CMAP 0x04
/* Defaults for the VGA memory window */
#define VGA_DEFAULT_PHYS_ADDR 0xA0000
/*
* vgaRegRec contains settings of standard VGA registers.
*/
typedef struct {
unsigned char MiscOutReg; /* */
unsigned char *CRTC; /* Crtc Controller */
unsigned char *Sequencer; /* Video Sequencer */
unsigned char *Graphics; /* Video Graphics */
unsigned char *Attribute; /* Video Atribute */
unsigned char numCRTC; /* number of CRTC registers, def=VGA_NUM_CRTC */
unsigned char numSequencer; /* number of seq registers, def=VGA_NUM_SEQ */
unsigned char numGraphics; /* number of gfx registers, def=VGA_NUM_GFX */
unsigned char numAttribute; /* number of attr registers, def=VGA_NUM_ATTR */
/*
* vgaHWRec contains per-screen information required by the vgahw module.
*
* Note, the palette referred to by the paletteEnabled, enablePalette and
* disablePalette is the 16-entry (+overscan) EGA-compatible palette accessed
* via the first 17 attribute registers and not the main 8-bit palette.
*/
typedef struct _vgaHWRec {
int MapSize; /* Size of "VGA" memory */
unsigned long MapPhys; /* phys location of VGA mem */
int IOBase; /* I/O Base address */
int MMIOOffset; /* base + offset + vgareg
= mmioreg */
plane 2 */
plane 3 */
current mode */
= pioreg */
struct pci_device *dev;
} vgaHWRec;
/* Some macros that VGA drivers can use in their ChipProbe() function */
/* Flags that define how overscan correction should take place */
/* to total - 1 */
#define BITS_PER_GUN 6
#define COLORMAP_SIZE 256
#else
do { \
} while (0)
#endif
/* Function Prototypes */
/* vgaHW.c */
vgaHWProtectProc *vgaHWProtectWeak(void);
int numGraphics, int numAttribute);
unsigned int Flags);
unsigned int Flags);
#endif /* _VGAHW_H */